<casper....@oracle.com> wrote:

> >It gets even better.  Executables become part of the swap space via
> >mmap, so that if you have a lot of copies of the same process running in
> >memory, the executable bits don't waste any more space (well, unless you
> >use the sticky bit, although that might be deprecated, or if you copy
> >the binary elsewhere.)  There's lots of awesome fun optimizations in
> >UNIX. :)
> The "sticky bit" has never been used in  that form of SunOS for as long
> as I remember (SunOS 3.x) and probably before that.  It no longer makes 
> sense in demand-paged executables.

SunOS-3.0 introduced NFS-root and swap on NFS. For that reason, the meaning of 
the sticky bit was changed to mean "do not cache write this file".

Note that SunOS-3.0 appeared with the new Sun3 machines (first build on 


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